Huh. My Ubiquiti was reporting WAN link down during this outage. I'm using ATT fiber. I'm wondering if "link down" doesn't mean what I think it means. Now that I check, it says "WAN iface [eth2] transition to state [inactive]". I'm wondering if that means link down or if it's doing service checking.
I actually have a WAN2 configured but not plugged in and it was set to "Load Balancing: Failover Only" ... I wonder if all of my 'connection issues' were software assuming my network link is down and switching interfaces to an unavailable one.
to reply to myself, if you have a second interface configured for failover, it actually tests against ping.ubnt.com. I bet every single time my ATT fiber has "gone out" for a minute or two at a time, it's been bogus.
root@USG-PRO-4:~# show load-balance watchdog
Group wan_failover
eth2
status: Running
pings: 2
fails: 0
run fails: 0/3
route drops: 0
ping gateway: ping.ubnt.com - REACHABLE
eth3
status: Waiting on recovery (0/3)
failover-only mode
pings: 1
fails: 1
run fails: 3/3
route drops: 1
ping gateway: ping.ubnt.com - DOWN
last route drop : Fri Jul 17 17:32:58 2020
I actually have a WAN2 configured but not plugged in and it was set to "Load Balancing: Failover Only" ... I wonder if all of my 'connection issues' were software assuming my network link is down and switching interfaces to an unavailable one.